Send WhatsApp messages to your contact list from a Google Sheet

flowchart TD trig(["sheet checked on schedule"]):::trigtime s0[("check pending contacts in sheet")]:::store s1["send whatsapp message to contact"]:::svc s2[("mark contact as sent")]:::store trig --> s0 s0 --> s1 s1 --> s2 lp{"pending contacts list exhausted"}:::gate s2 --> lp lp -. "moves to next pending contact" .-> s0 lp -->|"finished"| out out[/"all pending contacts messaged"/]:::out pay{{"reliable trackable bulk messaging"}}:::pay out --> pay classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff